Features: Resin Case Bio-Based Resin Strap Quartz Movement Resin Crystal Black Dial Digital Display 1/100 Second Stopwatch Daily Alarm Hourly Time Signal LED Light Auto Calendar Regular Timekeeping 12/24 Hours Display Day And Date Display Screwed Case Back Buckle Clasp Splash Resistance Approximate Case Diameter: 35.20 mm Approximate Case Thickness: 08.50 mm